Anandakanda 1.2.256

1.2.256

iti stutvā sūtarājaṃ sarvaṃ karma samarpayet /
raso dātā raso bhoktā rasaḥ kartā ca kāraṇam //

Having thus praised the king of quicksilver, one should offer all rites: / "Mercury is the giver, mercury is the enjoyer, mercury is the agent and the cause;